# Copyright 2025 The ZhipuAI Inc. team and HuggingFace Inc. team. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import warnings
from collections.abc import Callable

import numpy as np
import torch
import torch.nn as nn
import torch.nn.functional as F
from huggingface_hub.dataclasses import strict
from torch.nn import LayerNorm

from ... import initialization as init
from ...activations import ACT2FN
from ...cache_utils import Cache, DynamicCache
from ...configuration_utils import PreTrainedConfig
from ...masking_utils import create_causal_mask
from ...modeling_flash_attention_utils import FlashAttentionKwargs
from ...modeling_layers import GradientCheckpointingLayer
from ...modeling_outputs import BaseModelOutputWithPast, BaseModelOutputWithPooling
from ...modeling_rope_utils import RopeParameters
from ...modeling_utils import ALL_ATTENTION_FUNCTIONS, PreTrainedModel
from ...processing_utils import Unpack
from ...utils import (
    TransformersKwargs,
    auto_docstring,
    can_return_tuple,
    logging,
    torch_compilable_check,
)
from ...utils.deprecation import deprecate_kwarg
from ...utils.generic import accepts_precomputed_kwargs, maybe_autocast, merge_with_config_defaults
from ...utils.output_capturing import capture_outputs
from ...vision_utils import get_vision_cu_seqlens, get_vision_position_ids
from ..glm4.modeling_glm4 import Glm4MLP, Glm4RMSNorm, Glm4RotaryEmbedding, eager_attention_forward
from ..qwen2_5_vl.modeling_qwen2_5_vl import (
    Qwen2_5_VisionPatchEmbed,
    Qwen2_5_VisionRotaryEmbedding,
    Qwen2_5_VLCausalLMOutputWithPast,
    Qwen2_5_VLForConditionalGeneration,
    Qwen2_5_VLMLP,
    Qwen2_5_VLModelOutputWithPast,
    Qwen2_5_VLPreTrainedModel,
    Qwen2_5_VLTextModel,
    Qwen2_5_VLVisionAttention,
    Qwen2_5_VLVisionBlock,
)
from ..qwen2_vl.modeling_qwen2_vl import Qwen2VLModel
from ..qwen2_vl.processing_qwen2_vl import (
    Qwen2VLProcessor,
    Qwen2VLProcessorKwargs,
)


logger = logging.get_logger(__name__)


@auto_docstring(checkpoint="zai-org/GLM-4.1V-9B-Thinking")
@strict
class Glm4vVisionConfig(PreTrainedConfig):
    r"""
    out_hidden_size (`int`, *optional*, defaults to 4096):
        The output hidden size of the vision model.

    Example:

    ```python
    >>> from transformers import Glm4vVisionConfig, Glm4vVisionModel

    >>> # Initializing a Glm4vVisionConfig GLM-4.1V-9B style configuration
    >>> configuration = Glm4vVisionConfig()

    >>> # Initializing a model (with random weights) from the GLM-4.1V-9B configuration
    >>> model = Glm4vVisionModel(configuration)

    >>> # Accessing the model configuration
    >>> configuration = model.config
    ```"""

    model_type = "glm4v_vision"
    base_config_key = "vision_config"

    depth: int = 24
    hidden_size: int = 1536
    hidden_act: str = "silu"
    attention_bias: bool = False
    attention_dropout: float | int = 0.0
    num_heads: int = 12
    in_channels: int = 3
    image_size: int | list[int] | tuple[int, int] = 336
    patch_size: int | list[int] | tuple[int, int] = 14
    rms_norm_eps: float = 1e-05
    spatial_merge_size: int = 2
    temporal_patch_size: int | list[int] | tuple[int, int] = 2
    out_hidden_size: int = 4096
    intermediate_size: int = 13696
    initializer_range: float = 0.02


@auto_docstring(checkpoint="zai-org/GLM-4.1V-9B-Thinking")
@strict
class Glm4vTextConfig(PreTrainedConfig):
    r"""
    Example:

    ```python
    >>> from transformers import Glm4vTextModel, Glm4vConfig

    >>> # Initializing a GLM-4.1V style configuration
    >>> configuration = Glm4vConfig()

    >>> # Initializing a model from the GLM-4.1V style configuration
    >>> model = Glm4vTextModel(configuration)

    >>> # Accessing the model configuration
    >>> configuration = model.config
    ```"""

    model_type = "glm4v_text"
    base_config_key = "text_config"
    keys_to_ignore_at_inference = ["past_key_values"]
    # Default tensor parallel plan for base model `Glm4v`
    base_model_tp_plan = {
        "layers.*.self_attn.q_proj": "colwise",
        "layers.*.self_attn.k_proj": "colwise",
        "layers.*.self_attn.v_proj": "colwise",
        "layers.*.self_attn.o_proj": "rowwise",
        "layers.*.mlp.gate_up_proj": "colwise_gather_output",  # we need to replicate here due to the `chunk` operation
        "layers.*.mlp.down_proj": "rowwise_split_input",  # input is replicated due to the `chunk` operation
    }
    base_model_pp_plan = {
        "embed_tokens": (["input_ids"], ["inputs_embeds"]),
        "layers": (["hidden_states", "attention_mask"], ["hidden_states"]),
        "norm": (["hidden_states"], ["hidden_states"]),
    }
    ignore_keys_at_rope_validation = {"mrope_section"}

    vocab_size: int = 151552
    hidden_size: int = 4096
    intermediate_size: int = 13696
    num_hidden_layers: int = 40
    num_attention_heads: int = 32
    num_key_value_heads: int | None = 2
    hidden_act: str = "silu"
    max_position_embeddings: int = 32768
    initializer_range: float = 0.02
    rms_norm_eps: float = 1e-05
    use_cache: bool = True
    attention_dropout: float | int = 0.0
    rope_parameters: RopeParameters | dict | None = None
    pad_token_id: int | None = None

    def __post_init__(self, **kwargs):
        if self.num_key_value_heads is None:
            self.num_key_value_heads = self.num_attention_heads

        super().__post_init__(**kwargs)


@auto_docstring(checkpoint="zai-org/GLM-4.1V-9B-Thinking")
@strict
class Glm4vConfig(PreTrainedConfig):
    r"""
    image_start_token_id (`int`, *optional*, defaults to 151339):
        The image start token index to encode the start of image.
    image_end_token_id (`int`, *optional*, defaults to 151340):
        The image end token index to encode the end of image.
    video_start_token_id (`int`, *optional*, defaults to 151341):
        The video start token index to encode the start of video.
    video_end_token_id (`int`, *optional*, defaults to 151342):
        The video end token index to encode the end of video.

    ```python
    >>> from transformers import Glm4vForConditionalGeneration, Glm4vConfig

    >>> # Initializing a GLM-4.1V style configuration
    >>> configuration = Glm4vConfig()

    >>> # Initializing a model from the GLM-4.1V style configuration
    >>> model = Glm4vForConditionalGeneration(configuration)

    >>> # Accessing the model configuration
    >>> configuration = model.config
    ```"""

    model_type = "glm4v"
    sub_configs = {"vision_config": Glm4vVisionConfig, "text_config": Glm4vTextConfig}
    keys_to_ignore_at_inference = ["past_key_values"]

    text_config: dict | PreTrainedConfig | None = None
    vision_config: dict | PreTrainedConfig | None = None
    image_token_id: int = 151343
    video_token_id: int = 151344
    image_start_token_id: int = 151339
    image_end_token_id: int = 151340
    video_start_token_id: int = 151341
    video_end_token_id: int = 151342
    tie_word_embeddings: bool = False

    def __post_init__(self, **kwargs):
        if isinstance(self.vision_config, dict):
            self.vision_config = self.sub_configs["vision_config"](**self.vision_config)
        elif self.vision_config is None:
            self.vision_config = self.sub_configs["vision_config"](**kwargs)

        if isinstance(self.text_config, dict):
            self.text_config = self.sub_configs["text_config"](**self.text_config)
        elif self.text_config is None:
            self.text_config = self.sub_configs["text_config"](**kwargs)

        super().__post_init__(**kwargs)


# Will be used for both Text and Vision modalities
class Glm4vRMSNorm(Glm4RMSNorm):
    pass


class Glm4VisionMlp(Qwen2_5_VLMLP):
    def __init__(self, config, bias: bool = False):
        super().__init__(config, bias)
        self.intermediate_size = config.out_hidden_size


class Glm4vVisionPatchEmbed(Qwen2_5_VisionPatchEmbed):
    def __init__(self, config: Glm4vVisionConfig) -> None:
        nn.Module.__init__(self)
        self.patch_size = config.patch_size
        self.temporal_patch_size = config.temporal_patch_size
        self.in_channels = config.in_channels
        self.embed_dim = config.hidden_size

        kernel_size = [self.temporal_patch_size, self.patch_size, self.patch_size]
        self.proj = nn.Conv3d(self.in_channels, self.embed_dim, kernel_size=kernel_size, stride=kernel_size)


class Glm4vVisionRotaryEmbedding(Qwen2_5_VisionRotaryEmbedding):
    pass


class Glm4vVisionPatchMerger(nn.Module):
    def __init__(self, dim: int, context_dim: int, hidden_act: str, bias: bool = False) -> None:
        super().__init__()
        self.proj = nn.Linear(dim, dim, bias=bias)
        self.post_projection_norm = LayerNorm(dim)
        self.gate_proj = nn.Linear(dim, context_dim, bias=bias)
        self.up_proj = nn.Linear(dim, context_dim, bias=bias)
        self.down_proj = nn.Linear(context_dim, dim, bias=bias)
        self.act1 = nn.GELU()
        self.act_fn = ACT2FN[hidden_act]

    def forward(self, hidden_state: torch.Tensor) -> torch.Tensor:
        hidden_state = self.proj(hidden_state)
        hidden_state = self.act1(self.post_projection_norm(hidden_state))
        return self.down_proj(self.act_fn(self.gate_proj(hidden_state)) * self.up_proj(hidden_state))


class Glm4vVisionEmbeddings(nn.Module):
    def __init__(self, config: Glm4vVisionConfig):
        super().__init__()
        self.config = config
        self.embed_dim = config.hidden_size
        self.image_size = config.image_size
        self.patch_size = config.patch_size

        self.num_patches = (self.image_size // self.patch_size) ** 2
        self.num_positions = self.num_patches
        self.position_embedding = nn.Embedding(self.num_positions, self.embed_dim)
        self.interpolated_method = "bicubic"

    def forward(self, embeddings, lengths, image_shapes, h_coords, w_coords) -> torch.Tensor:
        """
        Forward pass with integrated position encoding adaptation using 2D interpolation.

        Args:
            embeddings: Input embeddings tensor
            lengths (torch.Tensor): Sequence lengths for each image in the batch.
            image_shapes (torch.Tensor): Tensor of shape [batch_size, 3] representing the image shapes (t, h, w).
            h_coords (torch.Tensor): Tensor of shape [total_seq] representing the h coordinate for each patch.
            w_coords (torch.Tensor): Tensor of shape [total_seq] representing the w coordinate for each patch.

        Returns:
            torch.Tensor: Embeddings with adapted position encoding added.
        """
        # Get position embedding parameters
        pos_embed_weight = self.position_embedding.weight
        hidden_size = pos_embed_weight.shape[1]
        device = pos_embed_weight.device

        # Convert inputs to tensors if needed
        if isinstance(lengths, list):
            lengths = torch.tensor(lengths, device=device, dtype=torch.long)

        # Prepare 2D position embedding
        orig_size_sq = pos_embed_weight.shape[0]
        orig_size = int(orig_size_sq**0.5)
        pos_embed_2d = (
            pos_embed_weight.view(orig_size, orig_size, hidden_size)
            .permute(2, 0, 1)
            .unsqueeze(0)
            .to(device=device, dtype=torch.float32)
        )

        # Calculate target dimensions for each patch
        num_tokens = embeddings.shape[0]
        token_positions = torch.arange(num_tokens, device=embeddings.device)
        seq_ids = (token_positions.unsqueeze(0) >= lengths.cumsum(0).unsqueeze(1)).sum(0)
        target_h = image_shapes[seq_ids, 1].to(dtype=torch.float32)
        target_w = image_shapes[seq_ids, 2].to(dtype=torch.float32)

        # Normalize coordinates to [-1, 1] range for grid_sample
        norm_w = ((w_coords + 0.5) / target_w) * 2 - 1
        norm_h = ((h_coords + 0.5) / target_h) * 2 - 1

        # Create sampling grid
        grid = torch.stack((norm_w, norm_h), dim=-1).unsqueeze(0).unsqueeze(2)

        # Perform bicubic interpolation
        interpolated_embed_fp32 = F.grid_sample(
            pos_embed_2d, grid, mode=self.interpolated_method, align_corners=False, padding_mode="border"
        )

        # Reshape and convert back to original dtype
        adapted_pos_embed_fp32 = interpolated_embed_fp32.squeeze(0).squeeze(-1).permute(1, 0)
        adapted_pos_embed = adapted_pos_embed_fp32.to(pos_embed_weight.dtype).to(embeddings.device)

        # Add adapted position encoding to embeddings
        embeddings = embeddings + adapted_pos_embed
        return embeddings


class Glm4vVisionAttention(Qwen2_5_VLVisionAttention):
    def __init__(self, config: Glm4vVisionConfig) -> None:
        super().__init__(config)
        self.attention_dropout = config.attention_dropout
        self.qkv = nn.Linear(config.hidden_size, config.hidden_size * 3, bias=config.attention_bias)
        self.proj = nn.Linear(config.hidden_size, config.hidden_size, bias=False)


class Glm4vVisionBlock(Qwen2_5_VLVisionBlock):
    def __init__(self, config) -> None:
        super().__init__(config)
        self.norm1 = Glm4vRMSNorm(config.hidden_size, eps=config.rms_norm_eps)
        self.norm2 = Glm4vRMSNorm(config.hidden_size, eps=config.rms_norm_eps)
        self.attn = Glm4vVisionAttention(config)
        self.mlp = Glm4VisionMlp(config, bias=False)


class Glm4vTextRotaryEmbedding(Glm4RotaryEmbedding):
    def __init__(self, config: Glm4vTextConfig, device=None):
        super().__init__()
        self.mrope_section = config.rope_parameters.get("mrope_section", [8, 12, 12])

    def forward(self, x, position_ids):
        # In contrast to other models, GLM-V has different position ids for the grids
        # So we expand the inv_freq to shape (3, ...)
        inv_freq_expanded = self.inv_freq[None, None, :, None].float().expand(3, position_ids.shape[1], -1, 1)
        position_ids_expanded = position_ids[:, :, None, :].float()  # shape (3, bs, 1, positions)

        device_type = x.device.type if isinstance(x.device.type, str) and x.device.type != "mps" else "cpu"
        with maybe_autocast(device_type=device_type, enabled=False):  # Force float32
            freqs = (inv_freq_expanded.float() @ position_ids_expanded.float()).transpose(2, 3)
            freqs = self.apply_mrope(freqs, self.mrope_section)
            emb = torch.cat((freqs, freqs), dim=-1)
            cos = emb.cos() * self.attention_scaling
            sin = emb.sin() * self.attention_scaling

        return cos.to(dtype=x.dtype), sin.to(dtype=x.dtype)

    def apply_mrope(self, freqs, mrope_section):
        section = mrope_section
        chunks = freqs.split(section, dim=-1)
        result = torch.cat([chunk[i % 3] for i, chunk in enumerate(chunks)], dim=-1)
        return result


def rotate_half_llm(x):
    """Rotates half the hidden dims of the input."""
    x1 = x[..., 0::2]
    x2 = x[..., 1::2]
    return torch.stack((-x2, x1), dim=-1).flatten(-2)


def apply_rotary_pos_emb(q, k, cos, sin, unsqueeze_dim=1):
    """Applies Rotary Position Embedding to the query and key tensors.

    Args:
        q (`torch.Tensor`): The query tensor.
        k (`torch.Tensor`): The key tensor.
        cos (`torch.Tensor`): The cosine part of the rotary embedding.
        sin (`torch.Tensor`): The sine part of the rotary embedding.
        unsqueeze_dim (`int`, *optional*, defaults to 1):
            The 'unsqueeze_dim' argument specifies the dimension along which to unsqueeze cos[position_ids] and
            sin[position_ids] so that they can be properly broadcasted to the dimensions of q and k. For example, note
            that cos[position_ids] and sin[position_ids] have the shape [batch_size, seq_len, head_dim]. Then, if q and
            k have the shape [batch_size, heads, seq_len, head_dim], then setting unsqueeze_dim=1 makes
            cos[position_ids] and sin[position_ids] broadcastable to the shapes of q and k. Similarly, if q and k have
            the shape [batch_size, seq_len, heads, head_dim], then set unsqueeze_dim=2.
    Returns:
        `tuple(torch.Tensor)` comprising of the query and key tensors rotated using the Rotary Position Embedding.
    """
    cos = cos.unsqueeze(unsqueeze_dim)
    sin = sin.unsqueeze(unsqueeze_dim)

    # Interleave them instead of usual shape
    cos = cos[..., : cos.shape[-1] // 2].repeat_interleave(2, dim=-1)
    sin = sin[..., : sin.shape[-1] // 2].repeat_interleave(2, dim=-1)

    # Keep half or full tensor for later concatenation
    rotary_dim = cos.shape[-1]
    q_rot, q_pass = q[..., :rotary_dim], q[..., rotary_dim:]
    k_rot, k_pass = k[..., :rotary_dim], k[..., rotary_dim:]

    # Apply rotary embeddings on the first half or full tensor
    q_embed = (q_rot * cos) + (rotate_half_llm(q_rot) * sin)
    k_embed = (k_rot * cos) + (rotate_half_llm(k_rot) * sin)

    # Concatenate back to full shape
    q_embed = torch.cat([q_embed, q_pass], dim=-1)
    k_embed = torch.cat([k_embed, k_pass], dim=-1)
    return q_embed, k_embed


class Glm4vTextAttention(nn.Module):
    """
    Multi-headed attention from 'Attention Is All You Need' paper.
    and "Generating Long Sequences with Sparse Transformers".
    """

    def __init__(self, config: Glm4vTextConfig, layer_idx: int | None = None):
        super().__init__()
        self.config = config
        self.layer_idx = layer_idx

        self.hidden_size = config.hidden_size
        self.num_heads = config.num_attention_heads
        self.head_dim = self.hidden_size // self.num_heads
        self.num_key_value_heads = config.num_key_value_heads
        self.num_key_value_groups = self.num_heads // self.num_key_value_heads
        self.is_causal = True
        self.attention_dropout = config.attention_dropout
        self.rope_parameters = config.rope_parameters
        self.scaling = self.head_dim**-0.5

        self.q_proj = nn.Linear(self.hidden_size, self.num_heads * self.head_dim, bias=True)
        self.k_proj = nn.Linear(self.hidden_size, self.num_key_value_heads * self.head_dim, bias=True)
        self.v_proj = nn.Linear(self.hidden_size, self.num_key_value_heads * self.head_dim, bias=True)
        self.o_proj = nn.Linear(self.num_heads * self.head_dim, self.hidden_size, bias=False)

    def forward(
        self,
        hidden_states: torch.Tensor,
        position_embeddings: tuple[torch.Tensor, torch.Tensor] | None = None,
        attention_mask: torch.Tensor | None = None,
        past_key_values: Cache | None = None,
        **kwargs: Unpack[FlashAttentionKwargs],
    ) -> tuple[torch.Tensor, torch.Tensor | None, tuple[torch.Tensor] | None]:
        bsz, q_len, _ = hidden_states.size()

        query_states = self.q_proj(hidden_states)
        key_states = self.k_proj(hidden_states)
        value_states = self.v_proj(hidden_states)

        query_states = query_states.view(bsz, q_len, -1, self.head_dim).transpose(1, 2)
        key_states = key_states.view(bsz, q_len, -1, self.head_dim).transpose(1, 2)
        value_states = value_states.view(bsz, q_len, -1, self.head_dim).transpose(1, 2)

        cos, sin = position_embeddings
        query_states, key_states = apply_rotary_pos_emb(query_states, key_states, cos, sin)

        if past_key_values is not None:
            key_states, value_states = past_key_values.update(key_states, value_states, self.layer_idx)

        attention_interface: Callable = ALL_ATTENTION_FUNCTIONS.get_interface(
            self.config._attn_implementation, eager_attention_forward
        )

        attn_output, attn_weights = attention_interface(
            self,
            query_states,
            key_states,
            value_states,
            attention_mask,
            dropout=0.0 if not self.training else self.attention_dropout,
            scaling=self.scaling,
            **kwargs,
        )

        attn_output = attn_output.reshape(bsz, q_len, -1).contiguous()
        attn_output = self.o_proj(attn_output)
        return attn_output, attn_weights


class Glm4vTextMLP(Glm4MLP):
    pass


class Glm4vTextDecoderLayer(GradientCheckpointingLayer):
    def __init__(self, config: Glm4vTextConfig, layer_idx: int):
        super().__init__()
        self.hidden_size = config.hidden_size
        self.self_attn = Glm4vTextAttention(config, layer_idx)
        self.mlp = Glm4vTextMLP(config)
        self.input_layernorm = Glm4vRMSNorm(config.hidden_size, eps=config.rms_norm_eps)
        self.post_attention_layernorm = Glm4vRMSNorm(config.hidden_size, eps=config.rms_norm_eps)
        self.post_self_attn_layernorm = Glm4vRMSNorm(config.hidden_size, eps=config.rms_norm_eps)
        self.post_mlp_layernorm = Glm4vRMSNorm(config.hidden_size, eps=config.rms_norm_eps)

    @auto_docstring
    def forward(
        self,
        hidden_states: torch.Tensor,
        position_embeddings: tuple[torch.Tensor, torch.Tensor] | None = None,
        attention_mask: torch.Tensor | None = None,
        position_ids: torch.LongTensor | None = None,
        past_key_values: Cache | None = None,
        use_cache: bool | None = False,
        **kwargs,
    ) -> tuple[torch.FloatTensor, tuple[torch.FloatTensor, torch.FloatTensor] | None]:
        residual = hidden_states

        hidden_states = self.input_layernorm(hidden_states)

        # Self Attention
        hidden_states, _ = self.self_attn(
            hidden_states=hidden_states,
            position_embeddings=position_embeddings,
            attention_mask=attention_mask,
            position_ids=position_ids,
            past_key_values=past_key_values,
            use_cache=use_cache,
            **kwargs,
        )

        hidden_states = self.post_self_attn_layernorm(hidden_states)
        hidden_states = residual + hidden_states

        # Fully Connected
        residual = hidden_states
        hidden_states = self.post_attention_layernorm(hidden_states)
        hidden_states = self.mlp(hidden_states)
        hidden_states = self.post_mlp_layernorm(hidden_states)
        hidden_states = residual + hidden_states

        return hidden_states


class Glm4vModelOutputWithPast(Qwen2_5_VLModelOutputWithPast):
    pass


class Glm4vPreTrainedModel(Qwen2_5_VLPreTrainedModel):
    _no_split_modules = ["Glm4vTextDecoderLayer", "Glm4vVisionBlock"]

    def _init_weights(self, module):
        PreTrainedModel._init_weights(self, module)
        if isinstance(module, Glm4vVisionRotaryEmbedding):
            inv_freq = 1.0 / (module.theta ** (torch.arange(0, module.dim, 2, dtype=torch.float) / module.dim))
            init.copy_(module.inv_freq, inv_freq)


class Glm4vVisionModel(Glm4vPreTrainedModel):
    config: Glm4vVisionConfig
    input_modalities = ("image", "video")
    _no_split_modules = ["Glm4vVisionBlock"]
    _can_record_outputs = {
        "hidden_states": Glm4vVisionBlock,
        "attentions": Glm4vVisionAttention,
    }

    def __init__(self, config) -> None:
        super().__init__(config)
        self.spatial_merge_size = config.spatial_merge_size
        self.patch_size = config.patch_size

        self.embeddings = Glm4vVisionEmbeddings(config)
        self.patch_embed = Glm4vVisionPatchEmbed(config)

        head_dim = config.hidden_size // config.num_heads
        self.rotary_pos_emb = Glm4vVisionRotaryEmbedding(head_dim // 2)

        self.blocks = nn.ModuleList([Glm4vVisionBlock(config) for _ in range(config.depth)])
        self.merger = Glm4vVisionPatchMerger(
            dim=config.out_hidden_size, context_dim=config.intermediate_size, hidden_act=config.hidden_act
        )

        self.post_conv_layernorm = Glm4vRMSNorm(config.hidden_size, eps=config.rms_norm_eps)
        self.downsample = nn.Conv2d(
            in_channels=config.hidden_size,
            out_channels=config.out_hidden_size,
            kernel_size=config.spatial_merge_size,
            stride=config.spatial_merge_size,
        )
        self.post_layernorm = Glm4vRMSNorm(config.hidden_size, eps=config.rms_norm_eps)

        self.gradient_checkpointing = False
        self.post_init()

    def rot_pos_emb(self, grid_thw):
        warnings.warn(
            f"`{self.__class__.__name__}.rot_pos_emb` is deprecated and will be removed in v5.11. Use `get_vision_position_ids` from `transformers.vision_utils` and apply the rotary embedding module.",
            FutureWarning,
            stacklevel=2,
        )
        position_ids = get_vision_position_ids(grid_thw, self.spatial_merge_size)
        rotary_pos_emb = self.rotary_pos_emb(position_ids)
        return rotary_pos_emb, position_ids

    @merge_with_config_defaults
    @capture_outputs
    @auto_docstring
    def forward(
        self, hidden_states: torch.Tensor, grid_thw: torch.Tensor, **kwargs: Unpack[TransformersKwargs]
    ) -> tuple | BaseModelOutputWithPooling:
        r"""
        hidden_states (`torch.Tensor` of shape `(seq_len, hidden_size)`):
            The final hidden states of the model.
        grid_thw (`torch.Tensor` of shape `(num_images_or_videos, 3)`):
            The temporal, height and width of feature shape of each image in LLM.

        Returns:
            `torch.Tensor`: hidden_states.
        """
        position_ids = get_vision_position_ids(grid_thw, self.spatial_merge_size, kwargs=kwargs)
        cu_seqlens = get_vision_cu_seqlens(grid_thw, kwargs=kwargs)

        hidden_states = self.patch_embed(hidden_states)
        hidden_states = self.post_conv_layernorm(hidden_states)
        rotary_emb = self.rotary_pos_emb(position_ids)
        emb = torch.cat((rotary_emb, rotary_emb), dim=-1)
        position_embeddings = (emb.cos(), emb.sin())

        seqlens = cu_seqlens[1:] - cu_seqlens[:-1]
        hidden_states = self.embeddings(
            hidden_states,
            seqlens,
            grid_thw,
            position_ids[:, 0].to(hidden_states.device),
            position_ids[:, 1].to(hidden_states.device),
        )

        for blk in self.blocks:
            hidden_states = blk(
                hidden_states,
                cu_seqlens=cu_seqlens,
                position_embeddings=position_embeddings,
                **kwargs,
            )

        hidden_states = self.post_layernorm(hidden_states)

        hidden_states = hidden_states.view(
            -1, self.spatial_merge_size, self.spatial_merge_size, hidden_states.shape[-1]
        )
        hidden_states = hidden_states.permute(0, 3, 1, 2)
        hidden_states = self.downsample(hidden_states).view(-1, self.config.out_hidden_size)

        merged_hidden_states = self.merger(hidden_states)

        return BaseModelOutputWithPooling(
            last_hidden_state=hidden_states,
            pooler_output=merged_hidden_states,
        )


class Glm4vTextModel(Qwen2_5_VLTextModel):
    _can_record_outputs = {
        "hidden_states": Glm4vTextDecoderLayer,
        "attentions": Glm4vTextAttention,
    }

    def __init__(self, config: Glm4vTextConfig):
        super().__init__(config)
        self.layers = nn.ModuleList(
            [Glm4vTextDecoderLayer(config, layer_idx) for layer_idx in range(config.num_hidden_layers)]
        )
        self.norm = Glm4vRMSNorm(config.hidden_size, eps=config.rms_norm_eps)
        self.rotary_emb = Glm4vTextRotaryEmbedding(config=config)
        del self._attn_implementation
        del self.has_sliding_layers

    @auto_docstring
    @merge_with_config_defaults
    @capture_outputs
    def forward(
        self,
        input_ids: torch.LongTensor | None = None,
        attention_mask: torch.Tensor | None = None,
        position_ids: torch.LongTensor | None = None,
        past_key_values: Cache | None = None,
        inputs_embeds: torch.FloatTensor | None = None,
        use_cache: bool | None = None,
        **kwargs: Unpack[FlashAttentionKwargs],
    ) -> tuple | BaseModelOutputWithPast:
        if (input_ids is None) ^ (inputs_embeds is not None):
            raise ValueError("You must specify exactly one of input_ids or inputs_embeds")

        # torch.jit.trace() doesn't support cache objects in the output
        if use_cache and past_key_values is None and not torch.jit.is_tracing():
            past_key_values = DynamicCache(config=self.config)

        if inputs_embeds is None:
            inputs_embeds = self.embed_tokens(input_ids)

        # the hard coded `3` is for temporal, height and width.
        if position_ids is None:
            past_seen_tokens = past_key_values.get_seq_length() if past_key_values is not None else 0
            position_ids = torch.arange(inputs_embeds.shape[1], device=inputs_embeds.device) + past_seen_tokens
            position_ids = position_ids.view(1, 1, -1).expand(3, inputs_embeds.shape[0], -1)
        elif position_ids.ndim == 2:
            position_ids = position_ids[None, ...].expand(3, position_ids.shape[0], -1)

        # NOTE: we need to pass text position ids for packing. Qwen2-VL uses 3D positions
        # where each dim indicates visual spatial positions for temporal/height/width grids.
        # There are two scenarios when FA2-like packed masking might be activated.
        # 1. User specifically passed packed `position_ids` and no attention mask.
        #    In this case we expect the useer to create correct position ids for all 3 grids
        #    and prepend text-only position ids to it. The final tensor will be [4, bs, seq-len]
        # 2. User runs forward with no attention mask and no position ids. In this case, position ids
        #    are prepared by the model (`get_rope_index`) as `[4, bs, seq-len]` tensor. Text-only positions are
        #    prepended by us when creating positions so that the mask is constructed correctly. NOTE: failing to pass
        #    text-only positions will cause incorrect mask construction, do not change `prepare_input_for_generation`
        if position_ids.ndim == 3 and position_ids.shape[0] == 4:
            text_position_ids = position_ids[0]
            position_ids = position_ids[1:]
        else:
            # If inputs are not packed (usual 3D positions), do not prepare mask from position_ids
            text_position_ids = None

        mask_kwargs = {
            "config": self.config,
            "inputs_embeds": inputs_embeds,
            "attention_mask": attention_mask,
            "past_key_values": past_key_values,
            "position_ids": text_position_ids,
        }
        # Create the masks
        causal_mask = create_causal_mask(**mask_kwargs)

        hidden_states = inputs_embeds
        position_embeddings = self.rotary_emb(hidden_states, position_ids=position_ids)

        for decoder_layer in self.layers:
            layer_outputs = decoder_layer(
                hidden_states,
                attention_mask=causal_mask,
                position_ids=text_position_ids,
                past_key_values=past_key_values,
                position_embeddings=position_embeddings,
                **kwargs,
            )
            hidden_states = layer_outputs

        hidden_states = self.norm(hidden_states)

        return BaseModelOutputWithPast(
            last_hidden_state=hidden_states,
            past_key_values=past_key_values,
        )


class Glm4vModel(Qwen2VLModel):
    _no_split_modules = ["Glm4vTextDecoderLayer", "Glm4vVisionBlock"]

    def __init__(self, config):
        super().__init__(config)
        self.visual = Glm4vVisionModel._from_config(config.vision_config)

    @accepts_precomputed_kwargs(modality="video")
    @can_return_tuple
    @auto_docstring
    def get_video_features(
        self,
        pixel_values_videos: torch.FloatTensor,
        video_grid_thw: torch.LongTensor | None = None,
        **kwargs: Unpack[TransformersKwargs],
    ) -> tuple | BaseModelOutputWithPooling:
        r"""
        pixel_values_videos (`torch.FloatTensor` of shape `(batch_size, num_channels, image_size, image_size)`):
            The tensors corresponding to the input videos.
        video_grid_thw (`torch.LongTensor` of shape `(num_videos, 3)`, *optional*):
            The temporal, height and width of feature shape of each video in LLM.
        """
        pixel_values_videos = pixel_values_videos.type(self.visual.dtype)
        # reshape video_grid_thw -> [b, 3] -> [1, h, w] * frames
        t = video_grid_thw[:, 0]
        hw = video_grid_thw[:, 1:]
        # repeat each (h,w) row `t` times
        flattened_hw = torch.repeat_interleave(hw, t, dim=0)
        prefix_ones = video_grid_thw.new_ones(flattened_hw.shape[0], 1)
        flattened_video_grid_thw = torch.cat([prefix_ones, flattened_hw], dim=1)
        vision_outputs = self.visual(
            pixel_values_videos, grid_thw=flattened_video_grid_thw, return_dict=True, **kwargs
        )
        split_sizes = (video_grid_thw.prod(-1) // self.visual.spatial_merge_size**2).tolist()
        video_embeds = torch.split(vision_outputs.pooler_output, split_sizes)
        vision_outputs.pooler_output = video_embeds

        return vision_outputs

    def get_placeholder_mask(
        self,
        input_ids: torch.LongTensor,
        inputs_embeds: torch.FloatTensor,
        image_features: torch.FloatTensor | None = None,
        video_features: torch.FloatTensor | None = None,
    ):
        """
        Obtains multimodal placeholder mask from `input_ids` or `inputs_embeds`, and checks that the placeholder token count is
        equal to the length of multimodal features. If the lengths are different, an error is raised.
        """
        if input_ids is None:
            special_image_mask = inputs_embeds == self.get_input_embeddings()(
                torch.tensor(self.config.image_token_id, dtype=torch.long, device=inputs_embeds.device)
            )
            special_image_mask = special_image_mask.all(-1)
            special_video_mask = inputs_embeds == self.get_input_embeddings()(
                torch.tensor(self.config.video_token_id, dtype=torch.long, device=inputs_embeds.device)
            )
            special_video_mask = special_video_mask.all(-1)
        else:
            # GLM-4.1V and GLM-4.5V special_video_mask is special_image_mask
            special_image_mask = input_ids == self.config.image_token_id
            special_video_mask = input_ids == self.config.image_token_id

        n_image_tokens = special_image_mask.sum()
        special_image_mask = special_image_mask.unsqueeze(-1).to(inputs_embeds.device)
        if image_features is not None:
            torch_compilable_check(
                n_image_tokens * inputs_embeds.shape[-1] == image_features.numel(),
                f"Image features and image tokens do not match, tokens: {n_image_tokens}, features: {image_features.shape[0]}",
            )

        n_video_tokens = special_video_mask.sum()
        special_video_mask = special_video_mask.unsqueeze(-1).to(inputs_embeds.device)
        if video_features is not None:
            torch_compilable_check(
                n_video_tokens * inputs_embeds.shape[-1] == video_features.numel(),
                f"Video features and video tokens do not match, tokens: {n_video_tokens}, features: {video_features.shape[0]}",
            )
        return special_image_mask, special_video_mask

    def get_rope_index(
        self,
        video_grid_thw: torch.LongTensor | None = None,
        **super_kwargs,
    ) -> tuple[torch.Tensor, torch.Tensor]:
        """
        Difference from Qwen2VL/Qwen2.5VL's get_rope_index:
        - GLM4V uses timestamps to separate each video frame, so the video_grid_thw should also be split too.

        Args:
            input_ids (`torch.LongTensor` of shape `(batch_size, sequence_length)`):
                Indices of input sequence tokens in the vocabulary. Padding will be ignored by default should you provide
                it.
            mm_token_type_ids (`torch.IntTensor` of shape `(batch_size, sequence_length)`):
                Token type ids matching each modality to a different value in the input sequence, i.e. text (0), image (1), video (2).
            image_grid_thw (`torch.LongTensor` of shape `(num_images, 3)`, *optional*):
                The temporal, height and width of feature shape of each image in LLM.
            video_grid_thw (`torch.LongTensor` of shape `(num_videos, 3)`, *optional*):
                The temporal, height and width of feature shape of each video in LLM.
            attention_mask (`torch.Tensor` of shape `(batch_size, sequence_length)`, *optional*):
                Mask to avoid performing attention on padding token indices. Mask values selected in `[0, 1]`:

                - 1 for tokens that are **not masked**,
                - 0 for tokens that are **masked**.

        Returns:
            position_ids (`torch.LongTensor` of shape `(3, batch_size, sequence_length)`)
            mrope_position_deltas (`torch.Tensor` of shape `(batch_size)`)
        """

        # Separate video grid thw into multiple grids because timestamps are used to separate videos.
        if video_grid_thw is not None:
            video_grid_thw = torch.repeat_interleave(video_grid_thw, video_grid_thw[:, 0], dim=0)
            video_grid_thw[:, 0] = 1

        return super().get_rope_index(video_grid_thw=video_grid_thw, **super_kwargs)

    @deprecate_kwarg("rope_deltas", version="v5.10")
    @auto_docstring
    @can_return_tuple
    def forward(
        self,
        input_ids: torch.LongTensor | None = None,
        attention_mask: torch.Tensor | None = None,
        position_ids: torch.LongTensor | None = None,
        past_key_values: Cache | None = None,
        inputs_embeds: torch.FloatTensor | None = None,
        pixel_values: torch.Tensor | None = None,
        pixel_values_videos: torch.FloatTensor | None = None,
        image_grid_thw: torch.LongTensor | None = None,
        video_grid_thw: torch.LongTensor | None = None,
        mm_token_type_ids: torch.IntTensor | None = None,
        **kwargs: Unpack[TransformersKwargs],
    ) -> tuple | Glm4vModelOutputWithPast:
        r"""
        image_grid_thw (`torch.LongTensor` of shape `(num_images, 3)`, *optional*):
            The temporal, height and width of feature shape of each image in LLM.
        video_grid_thw (`torch.LongTensor` of shape `(num_videos, 3)`, *optional*):
            The temporal, height and width of feature shape of each video in LLM.
        """
        if (input_ids is None) ^ (inputs_embeds is not None):
            raise ValueError("You must specify exactly one of input_ids or inputs_embeds")

        if inputs_embeds is None:
            inputs_embeds = self.get_input_embeddings()(input_ids)

        if pixel_values is not None:
            image_embeds = self.get_image_features(
                pixel_values, image_grid_thw, return_dict=True, **kwargs
            ).pooler_output
            image_embeds = torch.cat(image_embeds, dim=0).to(inputs_embeds.device, inputs_embeds.dtype)
            image_mask, _ = self.get_placeholder_mask(input_ids, inputs_embeds, image_features=image_embeds)
            inputs_embeds = inputs_embeds.masked_scatter(image_mask, image_embeds)

        if pixel_values_videos is not None:
            video_embeds = self.get_video_features(
                pixel_values_videos, video_grid_thw, return_dict=True, **kwargs
            ).pooler_output
            video_embeds = torch.cat(video_embeds, dim=0).to(inputs_embeds.device, inputs_embeds.dtype)
            _, video_mask = self.get_placeholder_mask(input_ids, inputs_embeds, video_features=video_embeds)
            inputs_embeds = inputs_embeds.masked_scatter(video_mask, video_embeds)

        if position_ids is None:
            position_ids = self.compute_3d_position_ids(
                input_ids=input_ids,
                image_grid_thw=image_grid_thw,
                video_grid_thw=video_grid_thw,
                inputs_embeds=inputs_embeds,
                attention_mask=attention_mask,
                past_key_values=past_key_values,
                mm_token_type_ids=mm_token_type_ids,
            )

        outputs = self.language_model(
            input_ids=None,
            position_ids=position_ids,
            attention_mask=attention_mask,
            past_key_values=past_key_values,
            inputs_embeds=inputs_embeds,
            **kwargs,
        )

        return Glm4vModelOutputWithPast(
            **outputs,
            rope_deltas=self.rope_deltas,
        )


class Glm4vCausalLMOutputWithPast(Qwen2_5_VLCausalLMOutputWithPast):
    pass


class Glm4vForConditionalGeneration(Qwen2_5_VLForConditionalGeneration):
    def forward(
        self,
        input_ids: torch.LongTensor | None = None,
        attention_mask: torch.Tensor | None = None,
        position_ids: torch.LongTensor | None = None,
        past_key_values: Cache | None = None,
        inputs_embeds: torch.FloatTensor | None = None,
        labels: torch.LongTensor | None = None,
        pixel_values: torch.Tensor | None = None,
        pixel_values_videos: torch.FloatTensor | None = None,
        image_grid_thw: torch.LongTensor | None = None,
        video_grid_thw: torch.LongTensor | None = None,
        mm_token_type_ids: torch.IntTensor | None = None,
        logits_to_keep: int | torch.Tensor = 0,
        **kwargs: Unpack[TransformersKwargs],
    ) -> tuple | Glm4vCausalLMOutputWithPast:
        r"""
        labels (`torch.LongTensor` of shape `(batch_size, sequence_length)`, *optional*):
            Labels for computing the masked language modeling loss. Indices should either be in `[0, ...,
            config.vocab_size]` or -100 (see `input_ids` docstring). Tokens with indices set to `-100` are ignored
            (masked), the loss is only computed for the tokens with labels in `[0, ..., config.vocab_size]`.
        image_grid_thw (`torch.LongTensor` of shape `(num_images, 3)`, *optional*):
            The temporal, height and width of feature shape of each image in LLM.
        video_grid_thw (`torch.LongTensor` of shape `(num_videos, 3)`, *optional*):
            The temporal, height and width of feature shape of each video in LLM.

        Example:

        ```python
        >>> from PIL import Image
        >>> import httpx
        >>> from io import BytesIO
        >>> from transformers import AutoProcessor, Glm4vForConditionalGeneration

        >>> model = Glm4vForConditionalGeneration.from_pretrained("zai-org/GLM-4.1V-9B-Thinking")
        >>> processor = AutoProcessor.from_pretrained("zai-org/GLM-4.1V-9B-Thinking")

        >>> messages = [
            {
                "role": "user",
                "content": [
                    {"type": "image", "url": "https://www.ilankelman.org/stopsigns/australia.jpg"},
                    {"type": "text", "text": "What is shown in this image?"},
                ],
            },
        ]
        >>> url = "https://www.ilankelman.org/stopsigns/australia.jpg"
        >>> with httpx.stream("GET", url) as response:
        ...     image = Image.open(BytesIO(response.read()))

        >>> text = processor.apply_chat_template(messages, tokenize=False, add_generation_prompt=True)
        >>> inputs = processor(text=[text], images=[image], vision_infos=[vision_infos])

        >>> # Generate
        >>> generate_ids = model.generate(inputs.input_ids, max_length=30)
        >>> tokenizer.batch_decode(generate_ids, skip_special_tokens=True, clean_up_tokenization_spaces=False)[0]
        "The image shows a street scene with a red stop sign in the foreground. In the background, there is a large red gate with Chinese characters ..."
        ```"""
        outputs = self.model(
            input_ids=input_ids,
            pixel_values=pixel_values,
            pixel_values_videos=pixel_values_videos,
            image_grid_thw=image_grid_thw,
            video_grid_thw=video_grid_thw,
            mm_token_type_ids=mm_token_type_ids,
            position_ids=position_ids,
            attention_mask=attention_mask,
            past_key_values=past_key_values,
            inputs_embeds=inputs_embeds,
            **kwargs,
        )

        hidden_states = outputs[0]

        # Only compute necessary logits, and do not upcast them to float if we are not computing the loss
        slice_indices = slice(-logits_to_keep, None) if isinstance(logits_to_keep, int) else logits_to_keep
        logits = self.lm_head(hidden_states[:, slice_indices, :])

        loss = None
        if labels is not None:
            loss = self.loss_function(logits=logits, labels=labels, vocab_size=self.config.text_config.vocab_size)

        return Glm4vCausalLMOutputWithPast(
            loss=loss,
            logits=logits,
            past_key_values=outputs.past_key_values,
            hidden_states=outputs.hidden_states,
            attentions=outputs.attentions,
            rope_deltas=outputs.rope_deltas,
        )

    def prepare_inputs_for_generation(
        self,
        input_ids,
        past_key_values=None,
        attention_mask=None,
        inputs_embeds=None,
        position_ids=None,
        use_cache=True,
        pixel_values=None,
        pixel_values_videos=None,
        image_grid_thw=None,
        video_grid_thw=None,
        is_first_iteration=False,
        **kwargs,
    ):
        # Overwritten -- in specific circumstances we don't want to forward image inputs to the model

        model_inputs = super().prepare_inputs_for_generation(
            input_ids,
            past_key_values=past_key_values,
            attention_mask=attention_mask,
            inputs_embeds=inputs_embeds,
            position_ids=position_ids,
            pixel_values=pixel_values,
            pixel_values_videos=pixel_values_videos,
            image_grid_thw=image_grid_thw,
            video_grid_thw=video_grid_thw,
            use_cache=use_cache,
            is_first_iteration=is_first_iteration,
            **kwargs,
        )

        if not is_first_iteration and use_cache:
            model_inputs["pixel_values"] = None
            model_inputs["pixel_values_videos"] = None

        return model_inputs

    def _get_image_nums_and_video_nums(
        self,
        input_ids: torch.LongTensor | None,
        inputs_embeds: torch.Tensor | None = None,
    ) -> tuple[torch.Tensor, torch.Tensor]:
        """
        Get the number of images and videos for each sample to calculate the separation length of the sample tensor.
        These parameters are not passed through the processor to avoid unpredictable impacts from interface modifications.

        Args:
            input_ids (`torch.LongTensor` of shape `(batch_size, sequence_length)`):
                Indices of input sequence tokens in the vocabulary.

        Returns:
            image_nums (`torch.LongTensor` of shape `(batch_size, num_images_sample)`)
            video_nums (`torch.LongTensor` of shape `(batch_size, num_videos_sample)`)
        """

        if inputs_embeds is not None:
            is_image = (
                inputs_embeds
                == self.get_input_embeddings()(
                    torch.tensor(self.config.image_start_token_id, dtype=torch.long, device=inputs_embeds.device)
                )
            )[..., 0]
            is_video_start = (
                inputs_embeds
                == self.get_input_embeddings()(
                    torch.tensor(self.config.video_start_token_id, dtype=torch.long, device=inputs_embeds.device)
                )
            )[..., 0]
            is_video_end = (
                inputs_embeds
                == self.get_input_embeddings()(
                    torch.tensor(self.config.video_end_token_id, dtype=torch.long, device=inputs_embeds.device)
                )
            )[..., 0]
        else:
            is_image = input_ids == self.config.image_start_token_id
            is_video_start = input_ids == self.config.video_start_token_id
            is_video_end = input_ids == self.config.video_end_token_id

        # Cumulative sum to track if we're inside a video span
        # We'll assume well-formed video tags (i.e. matching starts and ends)
        video_level = torch.cumsum(is_video_start.int() - is_video_end.int(), dim=1)
        inside_video = video_level > 0  # shape (batch_size, seq_length)

        # Mask out image tokens that are inside video spans
        standalone_images = is_image & (~inside_video)

        # Count per batch
        image_counts = standalone_images.sum(dim=1)
        video_counts = is_video_start.sum(dim=1)

        return image_counts, video_counts


class Glm4vProcessorKwargs(Qwen2VLProcessorKwargs):
    _defaults = {
        "text_kwargs": {
            "padding": False,
            "return_token_type_ids": False,
            "return_mm_token_type_ids": True,
        },
        "videos_kwargs": {"return_metadata": True},
    }


class Glm4vProcessor(Qwen2VLProcessor):
    def __init__(self, image_processor=None, tokenizer=None, video_processor=None, chat_template=None, **kwargs):
        super().__init__(image_processor, tokenizer, video_processor, chat_template=chat_template)
        self.image_token = "<|image|>" if not hasattr(tokenizer, "image_token") else tokenizer.image_token
        self.video_token = "<|video|>" if not hasattr(tokenizer, "video_token") else tokenizer.video_token
        self.video_start_id = tokenizer.convert_tokens_to_ids("<|begin_of_video|>")
        self.video_end_id = tokenizer.convert_tokens_to_ids("<|end_of_video|>")

    def replace_video_token(self, video_inputs: dict, video_idx: int) -> str:
        merge_length = self.video_processor.merge_size**2
        num_frames = video_inputs["video_grid_thw"][video_idx][0]
        num_image_tokens = video_inputs["video_grid_thw"][video_idx].prod() // merge_length // num_frames
        metadata = video_inputs["video_metadata"][video_idx]
        video_structure = ""

        if metadata.fps is None:
            logger.warning_once(
                "GLM4V requires frame timestamps to construct prompts, but the `fps` of the input video could not be inferred. "
                "Probably `video_metadata` was missing from inputs and you passed pre-sampled frames. "
                "Defaulting to `fps=24`. Please provide `video_metadata` for more accurate results."
            )
        metadata.fps = 24 if metadata.fps is None else metadata.fps
        timestamps = metadata.timestamps[::2]  # mrope

        unique_timestamps = []
        for idx in range(0, len(timestamps)):
            unique_timestamps.append(timestamps[idx])

        selected_timestamps = unique_timestamps[:num_frames]
        while len(selected_timestamps) < num_frames:
            selected_timestamps.append(selected_timestamps[-1] if selected_timestamps else 0)

        for frame_idx in range(num_frames):
            timestamp_sec = selected_timestamps[frame_idx]
            frame_structure = self.replace_frame_token_id(timestamp_sec, num_image_tokens=num_image_tokens)
            video_structure += frame_structure

        return video_structure

    def create_mm_token_type_ids(self, input_ids: list) -> list[list[int]]:
        # We have to iterate for each list separately because inputs
        # might be non-padded lists and we can't cast numpy on that!
        # Then cast numpy as each input for faster indexing
        mm_token_type_ids = []
        for input in input_ids:
            array_ids = np.array(input)
            mm_token_types = np.zeros_like(input)

            # Replace 0 -> 2 only inside video segments because GLM4v
            # uses the same special token to denote images and video
            # Otherwise replace 0 -> 1 for image modality
            starts = np.cumsum(array_ids == self.video_start_id, axis=0)
            ends = np.cumsum(array_ids == self.video_end_id, axis=0)
            is_video_modality = starts > ends

            mm_token_types[(array_ids == self.image_token_id) & is_video_modality] = 2
            mm_token_types[(array_ids == self.image_token_id) & (~is_video_modality)] = 1
            mm_token_type_ids.append(mm_token_types.tolist())
        return mm_token_type_ids

    def replace_frame_token_id(self, timestamp_sec, num_image_tokens: int = 1):
        return f"<|begin_of_image|>{self.image_token * num_image_tokens}<|end_of_image|>{int(timestamp_sec)}"


__all__ = [
    "Glm4vConfig",
    "Glm4vTextConfig",
    "Glm4vVisionConfig",
    "Glm4vForConditionalGeneration",
    "Glm4vModel",
    "Glm4vPreTrainedModel",
    "Glm4vProcessor",
    "Glm4vTextModel",
    "Glm4vVisionModel",
]
